diff --git a/log.c b/log.c
index e268b42a..be083b57 100644
--- a/log.c
+++ b/log.c
@@ -58,6 +58,8 @@ void stderr_log_with_level(const char *level_name, int level, const char *fmt, .
 		vfprintf(stderr, fmt1, ap);
 
 		va_end(ap);
+
+		fflush(stderr);
 	}
 }